Chemistry concepts and calculations

You want to calculate the concentration, c, of a solution of nitrobenzene in hex

You want to calculate the concentration, c, of a solution of nitrobenzene in hexanes. At 252 nm, the maximum wavelength of absorbance, lambda_max, for nitrobenzene, it's molar abs…

You want to convert 5 mL of 3-methyl-2-butanol to 3-methyl-2-butene by an acid c

You want to convert 5 mL of 3-methyl-2-butanol to 3-methyl-2-butene by an acid catalyzed dehydration. In order to finalize the experimental details, you look up the physical const…

You want to convert 5 mL of 3-methyl-2-butanol to 3-methyl-2-butene by an acid c

You want to convert 5 mL of 3-methyl-2-butanol to 3-methyl-2-butene by an acid catalyzed dehydration. In order to finalize the experimental details, you look up the physical const…

You want to decaffeinate your coffee by extracting the caffeine outwith dichloro

You want to decaffeinate your coffee by extracting the caffeine outwith dichloromethane. It's too late to extract the caffeinefrom the coffee beans because you've already brewed y…

You want to decaffeinate your coffee by extracting the caffeine outwith dichloro

You want to decaffeinate your coffee by extracting the caffeine outwith dichloromethane. It's too late to extract the caffeinefrom the coffee beans because you've already brewed y…

You want to decaffeinate your coffee by extracting the caffeine outwith dichloro

You want to decaffeinate your coffee by extracting the caffeine outwith dichloromethane. It's too late to extract the caffeinefrom the coffee beans because you've already brewed y…

You want to design a pump and treat system to remove nicked from solution as (Ni

You want to design a pump and treat system to remove nicked from solution as (NiS) K_ap = 4 times10^-10. Nickel is present at 4 mx/1 and must be treated to below the drinking wate…

You want to design an oval racetrack such that 3200 lb racecars can round the tu

You want to design an oval racetrack such that 3200 lb racecars can round the turns of radius 1000 ft at 104 mi/h without the aid of friction. You estimate that when elements like…

You want to design an oval racetrack such that 3200 lb racercars can round the t

You want to design an oval racetrack such that 3200 lb racercars can round the turns of radius 1000ft at 98mi/h without the aid of friction. You estimate that when elements like d…

You want to determine H o for the reaction Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) To

You want to determine H o for the reaction Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g) To do so, you first determine the heat capacity of a calorimeter using the following reaction, whose …

You want to determine H° for the reaction Zn(s) + 2HCl(aq) ZnCH(aq) + H2(g) (a)

You want to determine H° for the reaction Zn(s) + 2HCl(aq) ZnCH(aq) + H2(g) (a) To do so, you first determine the heat capacity of a calorimeter using the following reaction, whos…

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a saline suspension of red blood cells labeled with 59Fe is injected into the tail vein. Before inje…

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a saline suspension of red blood cells labeled with 59Fe is injected into the tail vein. Before inje…

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a saline suspension of red blood cells labeled with 59Fe is injected into the tail vein. Before inje…

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a

You want to determine the blood volume of a live mouse. To do this, 0.10 mL of a saline suspension of red blood cells labeled with 59Fe is injected into the tail vein. Before inje…

You want to determine the concentration of Fe2+ in a solution. You decide to det

You want to determine the concentration of Fe2+ in a solution. You decide to determine the Fe2+ concentration by means of a redox titration with potassium permanganate. You use 50…

You want to determine the concentration of Fe2+in a solution. You decide to dete

You want to determine the concentration of Fe2+in a solution. You decide to determine the Fe2+ concentration by means of a redox titration with potassium permanganate. You use 50 …

You want to determine the concentration of Fe2+in a solution. You decide to dete

You want to determine the concentration of Fe2+in a solution. You decide to determine the Fe2+ concentration by means of a redox titration with potassium permanganate. You use 50 …

You want to determine the concentration of a dye in an unknown solution using vi

You want to determine the concentration of a dye in an unknown solution using visible spectroscopy. The dye is known to exhibit maximum absorbance at 573 nm, with a molar absorpti…

You want to determine the concentration of a dye in an unknown solution using vi

You want to determine the concentration of a dye in an unknown solution using visible spectroscopy. The dye is known to exhibit maximum absorbance at 573 nm, with a molar absorpti…

You want to determine the percent of sulfate in an unknown sample of a hydrated

You want to determine the percent of sulfate in an unknown sample of a hydrated metal sulfate with the formula My(SO4)x·nH2O. You dissolve 0.2888 g of your unknown in DI water and…

You want to determine the protein content in milk with the Kjeldahl method. You

You want to determine the protein content in milk with the Kjeldahl method. You take 100 g whole milk and use 100 mL of 0.5 M hydrochloric acid to collect ammonia. You needed 34.5…

You want to fill a culture chamber (surface area = 10 cm 2 ) with freshly dissec

You want to fill a culture chamber (surface area = 10 cm2) with freshly dissected cells at a plating density of 50,000 cells/cm2. In the culture chamber, you also need to put in 1…

You want to grow some flowers in a fenced flower bed (2\' wide times 3\' long) i

You want to grow some flowers in a fenced flower bed (2' wide times 3' long) in your front yard, so you prepare the flower bed by removing all existing plants. You buy a pack cont…

You want to know how many feet are in 3.5 yards, and how many inches are in 3.5

You want to know how many feet are in 3.5 yards, and how many inches are in 3.5 yards. You write the following program for that purpose: public class DistanceConverter {    public…

You want to maintain pH = 7.0 for an enzyme-catalyzed reaction that will produce

You want to maintain pH = 7.0 for an enzyme-catalyzed reaction that will produce hydrogen ions along with the desired product. At equal concentrations, which weak acid, if any, wi…

You want to make 100 mL of 0.30 M acetic acid buffer with pH 5.0. You are given

You want to make 100 mL of 0.30 M acetic acid buffer with pH 5.0. You are given a stock of 10 M acetic acid and a bottle of solid sodium acetate salt (MW-82g/mol). The formula for…

You want to make 100 mL of 0.30 M acetic acid buffer with pH 5.0. You are given

You want to make 100 mL of 0.30 M acetic acid buffer with pH 5.0. You are given a stock of 10 M acetic acid and a bottle of solid sodium acetate salt (MW-82g/mol). The formula for…

You want to make a Tris buffer stock solution for future use in your lab. You cu

You want to make a Tris buffer stock solution for future use in your lab. You currently have both Tris acid (MW: 157.6) and Tris base (MW: 121.14) available to use. The pka of thi…

You want to measure the concentration of compound Q in a complex sample. Q react

You want to measure the concentration of compound Q in a complex sample. Q reacts with reagent R to give a product that absorbs at 625 nm. Neither Q nor R by themselves absorb at …

You want to react copper (I) chloride with iron metal. Do you expect the reactio

You want to react copper (I) chloride with iron metal. Do you expect the reaction to occur? No, because water or gas is not formed. Yes, because iron is less active than copper on…

You want to run an experiment using Fe(OH)_3 to confirm the literature data foun

You want to run an experiment using Fe(OH)_3 to confirm the literature data found for this compound. Before you do the experiment you calculate what the literature says you should…

You want to run an experiment using Fe(OH)_3 to confirm the literature data foun

You want to run an experiment using Fe(OH)_3 to confirm the literature data found for this compound. Before you do the experiment you calculate what the literature says you should…

You want to send a secret message to your friend. You decide to agree on a Solut

You want to send a secret message to your friend. You decide to agree on a

You want to separate a mixture of benzene, toluene and p-xylene isocratically by

You want to separate a mixture of benzene, toluene and p-xylene isocratically by using reverse phase chromatography but don't get a baseline separation between the analytes with t…

You want to separate compound A from compound B by flash chromatography, which i

You want to separate compound A from compound B by flash chromatography, which is similar to the thin layer chromatography you did in the laboratory. The following are the results…

You want to transfer a document from one computer to another, and you want the d

You want to transfer a document from one computer to another, and you want the document to be encrypted. The destination computer is on another network, so you know data has to tr…

You watched too much Breaking Bad and try to make methamphetamine. Before you tr

You watched too much Breaking Bad and try to make methamphetamine. Before you try to sell it though, you want to see how good of a chemist you are by seeing how enantiomerically p…

You weigh a dry flask, and place a chunk of solid into it, then weigh it again.

You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fill the flask to the top with water and weigh the full flask. Finally, you take the solid…

You weigh a dry flask, and place a chunk of solid into it, then weigh it again.

You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fill the flask to the top with water and weigh the full flask. Finally, you take the solid…

You weigh a dry flask, and place a chunk of solid into it, then weigh it again.

You weigh a dry flask, and place a chunk of solid into it, then weigh it again. You then fill the flask to the top with water and weigh the full flask. Finally, you take the solid…

You weigh out a piece of copper wire (AW=63.546): Weight of copper standard.....

You weigh out a piece of copper wire (AW=63.546): Weight of copper standard....................0.2437 g Dissolve it in a slight excess of concentrated nitric acid. Add to the solu…

You weigh out a piece of copper wire (AW=63.546): Weight of coppers standard0.28

You weigh out a piece of copper wire (AW=63.546): Weight of coppers standard0.2828 g Dissolve it in a slight excess of concentrated nitric acid. Add to the solution the required a…

You weigh out a piece of copper wire (AW=63.546):Weight of copper standard......

You weigh out a piece of copper wire (AW=63.546):Weight of copper standard....................0.3951 g Dissolve it in slight excess of concentrated nitric acid. Add to the solutio…

You weigh out an antacid tablet and determine the mass to be 1.1990 g. After tak

You weigh out an antacid tablet and determine the mass to be 1.1990 g. After taking a 0.2455 g sample of the antacid tablet, you dissolve it in 25.00 mL of a 0.1006 M solution of …

You weigh out pure Calcium carbonate.... 0.1740 g a) Calculate how many whole dr

You weigh out pure Calcium carbonate.... 0.1740 g a) Calculate how many whole drops (.05 mL/drop) of 6 M HCl are required to dissolve this. (I found this to be 11.59 drops or 12 f…

You weigh out pure Calcium carbonate.... 0.1740 g a) Calculate how many whole dr

You weigh out pure Calcium carbonate.... 0.1740 g a) Calculate how many whole drops (.05 mL/drop) of 6 M HCl are required to dissolve this. (I found this to be 11.59 drops or 12 f…

You weigh three samples of the same metal, and find their masses to be 30.86 g,

You weigh three samples of the same metal, and find their masses to be 30.86 g, 41.34 g, and 35.70 g. The corresponding volumes are 3.4 mL, 4.9 mL, and 4.0 mL. What is the density…

You were asked to prepare a buffer with a pH of 9.00. Table 1: Weak Acid Ka pKa

You were asked to prepare a buffer with a pH of 9.00. Table 1: Weak Acid Ka pKa Lactic Acid (HC3H5O3) 1.4 x 10-4 3.85 Acetic Acid (HC2H3O2) 1.8 x 10-5 4.74 Carbonic Acid (H2CO3) 4…

You were asked to use generics and any of the data structures covered in chapter

You were asked to use generics and any of the data structures covered in chapters 20 and 21 to implement your own generic stack and queue. Use the UML diagrams below as a guidance…